如何修复'AnonymousUser'对象没有属性'profile'错误？

Question

我正在为假设的社交网络编写聊天应用程序但是当我尝试打开聊天页面时，我发出以下错误“AnonymousUser”对象没有属性“profile”错误。我认为模型文件中可能存在问题，但我无法弄清楚如何修复它，我现在真的很困惑！？谁能提出任何建议？

部分聊天views.py

def index(request):
if request.method == 'POST':
    print request.POST
    request.user.profile.is_chat_user=True
logged_users = []

if request.user.username and request.user.profile.is_chat_user:
    context = {'logged_users':logged_users}
    cu = request.user.profile
    cu.is_chat_user = True
    cu.last_accessed = utcnow()
    cu.save()

    return render(request, 'djangoChat/index.html', context)

    try:
            eml = request.COOKIES[ 'email' ]
            pwd = request.COOKIES[ 'password' ]
    except KeyError:
            d = {'server_message':"You are not logged in."}
            query_str = urlencode(d)

            return HttpResponseRedirect('/login/?'+query_str)

    try:
                    client = Vertex.objects.get(email = eml)
                    context = {'logged_users':logged_users}
                    cu = request.user.profile
                    cu.is_chat_user = True
                    cu.last_accessed = utcnow()
                    cu.save()
                    if client.password != pwd:
                            raise LookupError()
    except Vertex.DoesNotExist:
                    sleep(3)
                    d = {'server_message':"Wrong username or password."}
                    query_str = urlencode(d)
                    return HttpResponseRedirect('/login/?'+query_str)

    return render_to_response('djangoChat/index.html',
{"USER_EMAIL":eml,request.user.profile.is_chat_user:True},
context_instance=RequestContext(request))



 @csrf_exempt
def chat_api(request):
if request.method == 'POST':
    d = json.loads(request.body)
    msg =  d.get('msg')
    user = request.user.username 
    gravatar = request.user.profile.gravatar_url
    m = Message(user=user,message=msg,gravatar=gravatar)
    m.save()


    res = {'id':m.id,'msg':m.message,'user':m.user,'time':m.time.strftime('%I:%M:%S %p').lstrip('0'),'gravatar':m.gravatar}
    data = json.dumps(res)
    return HttpResponse(data,content_type="application/json")


# get request
r = Message.objects.order_by('-time')[:70]
res = []
for msgs in reversed(r) :
    res.append({'id':msgs.id,'user':msgs.user,'msg':msgs.message,'time':msgs.time.strftime('%I:%M:%S %p').lstrip('0'),'gravatar':msgs.gravatar})

data = json.dumps(res)


return HttpResponse(data,content_type="application/json")

def logged_chat_users(request):

u = Vertex.objects.filter(is_chat_user=True)

for j in u:
    elapsed = utcnow() - j.last_accessed
    if elapsed > datetime.timedelta(seconds=35):

        j.is_chat_user = False
        j.save()

uu = Vertex.objects.filter(is_chat_user=True)


d = []
for i in uu:
    d.append({'username': i.username,'gravatar':i.gravatar_url,'id':i.userID})
data = json.dumps(d)


return HttpResponse(data,content_type="application/json")

和我的聊天模型的一部分：

class Message(models.Model):
user = models.CharField(max_length=200)

message = models.TextField(max_length=200)
time = models.DateTimeField(auto_now_add=True)
gravatar = models.CharField(max_length=300)
def __unicode__(self):
    return self.user
def save(self):
    if self.time == None:
        self.time = datetime.now()
    super(Message, self).save()




def generate_avatar(email):
           a = "http://www.gravatar.com/avatar/"
           a+=hashlib.md5(email.lower()).hexdigest()
           a+='?d=identicon'
           return a
def hash_username(username):
           a = binascii.crc32(username)
           return a
 # the problem seems to be here ??!
 User.profile = property(lambda u: Vertex.objects.get_or_create(user=u,defaults={'gravatar_url':generate_avatar(u.email),'username':u.username,'userID':hash_username(u.username)})[0])

最后是另一个应用程序（ChatUsers）的一部分：

class Vertex(models.Model,object):
user = models.OneToOneField(User)
password = models.CharField(max_length=50)
#user_id = models.CharField(max_length=100)

username = models.CharField(max_length=300)
userID =models.IntegerField()

Message = models.CharField(max_length=500)
firstname = models.CharField(max_length=50)
lastname = models.CharField(max_length=50)
email = models.EmailField(max_length=75)
is_chat_user = models.BooleanField(default=False)
gravatar_url = models.CharField(max_length=300,null=True, blank=True)
last_accessed = models.DateTimeField(auto_now_add=True)

Answer 1

因为该用户尚未登录。 Django将它们视为AnonymousUser，而AnonymousUser则没有profile属性。

如果视图仅适用于登录用户，则可以将login_required装饰器添加到视图功能以强制登录过程。否则，您需要判断用户是否对is_authenticated函数是匿名的。

参考：Using the Django authentication system